From the Grand Complication Collection this <b>Special Edition</b> Tourbillon watch features:<li>Beautifully hand engraved guilloche silver dial-cover with a porthole cut-out to view the time. With the push of a button (located in teh center of the corwn) the case cover door flips oen to allow viewing of the entire dial.<li>The actual dial is decorated with Coates De Geneve stripes.<li>1 minute Tourbillon carriage located at the 6 o'clock with integrated seconds hand<li>Back Movement Plate visible & beautifully hand engraved.<li> Roman Numeral Hour Markers.<li>Signature Blued "Breguet" Style hands.<li>Approximate 50 Hour Power Reserve.